Question

The freezing chest (or cooling unit) in a refrigerator is kept near the top because:

• A. it cools the remaining space by the process of conduction
• B. it reduces cost
• C. convection currents can be set up this way
• D. it is convenient to use

Answer 1

The correct option is C

convection currents can be set up this way

The air near the top in contact with the freezing chest gets cooled. It becomes denser and therefore descends and the hot air from the lower part rises, thus giving rise to convection currents which gradually cool the whole refrigerator space.